Abstract: The rotation angle detection apparatus comprises: a rotor connected to a rotating body, a rotation angle detection unit, a memory unit and a control unit. Control unit detects an amplitude absolute value of a first angle detection signal and amplitude absolute value of a second angle detection signal. Control unit compares detected amplitude absolute value of first angle detection signal and amplitude absolute value of second angle detection signal to determine which is a smaller amplitude absolute value or a larger amplitude absolute value. Control unit calculates a basic rotation angle of the rotating body based on an arctangent angle of a quotient value obtained by dividing the smaller amplitude absolute value by the larger amplitude absolute value. Control unit converts the basic rotation angle to a different angle value for each of a plurality of angle processing cases, and the rotation angle of the rotating body is detected.

Abstract: The rotary connector comprises a stationary housing 11 having a cylindrical portion 17 therein, a movable housing 12 having a cylindrical portion 19 therein provided on the stationary housing so as to be rotatable relatively thereto, and a flexible cable 14 accommodated within a housing section 13 formed between the stationary housing and the movable housing, in which the rotary connector further includes temperature detection means 41 for detecting the temperature of the flexible cable in a state of the temperature detection means being exposed within the housing section.

Abstract: In a vibration isolator wherein an inner and an outer cylindrical fittings are connected by a rubber elastomer between both fittings; in the rubber elastomer above and below the inner cylindrical fitting, hollow spaces are formed circumferentially in a larger width, in a cross-section square to the axial direction, than an outside diameter of the inner cylindrical fitting; and lateral portions as support arms of the rubber elastomer between the hollow spaces support the inner cylindrical fitting to the outer cylindrical fitting, in order to lower the dynamic spring rate in the lateral direction square to the axial direction and facilitate the tuning of rigidity, without changing the vibration-isolating characteristics in the vertical direction and without deteriorating the durability, small vacancies are provided in the lateral portions at a distant position inboard from the outer cylindrical fitting.

Abstract: An image forming apparatus includes an image bearing member; a transferring member for transferring a toner image from the image bearing member onto a recording material at a transfer portion; voltage applying means for applying a voltage to the transferring member; wherein the voltage applying means is capable of applying to the transferring member a first voltage, a second voltage higher than the first voltage and a third voltage higher than the second voltage; wherein the voltage applying means applies the first voltage to the transferring member, then the second voltage prior to the recording material reaching the transfer portion, and then the third voltage after the recording material reaching the transfer portion.

Abstract: There is provided a rotation angular speed detection apparatus capable of detecting a rotation angular speed to reduce an error when the rotation angular speed for rotating a rotating body is low.

Abstract: A steering angle detecting mechanism of this invention comprises: a plurality of photocouplers for detecting a steering angle of a steering wheel; a timer circuit for setting time; a first power source control unit which is controlled by the set time of the timer circuit and intermittently drives one of the plurality of photocouplers; a second power source control unit for driving the rest of the plurality of photocouplers; a wake-up circuit for generating a wake-up signal when a detection value of the single photocoupler is different from the immediately preceding detection value of the single photocoupler; and a micro control unit which is switched between a sleep mode and a wake-up mode.

Abstract: In a stalk switch, a control lever is rotatably supported on a housing, and a driving member is slidably held on the base end of the control lever via a first spring. A sectionally V-shaped cam surface is provided inside the housing, and an end of the driving member is pressed into contact with a cam surface, whereby the control lever can be rotated between the neutral position and the left and right operating positions. A stopper member is slidably supported on the housing, and the stopper member is urged by a second spring having an urging force smaller than that of the first spring so as to project from the valley of the cam surface. An attraction member is attached to a rotating member rotating operatively associated with the slide of the stopper member, and an electromagnet is attached to the housing so as to oppose the attraction member.

Abstract: A rotational angle detecting apparatus [reduces the influences of a rotational angle detection error included in a linear slope portion of a detection signal when detecting a fine rotational angle, thereby achieving highly accurate detection of rotational angles. The rotational angle detecting apparatus includes] having a rotation detector that outputs, as a rotor coupled to a rotating member rotates, first and second detection signals, which [has a] have predetermined amplitudes, the same cycle, and a phase difference of a quarter wavelength, a memory for storing the first and second detection signals, and a control unit.

Abstract: Disclosed is a steering sensor unit which can highly accurately detect the rotational angle of a steering wheel, can be easily mounted on a steering shaft, and ensures satisfactory operability after mounted on the steering shaft. A rotor of a steering sensor has joint portions provided thereon for transmitting rotation of a steering wheel to the rotor. When the steering sensor unit is mounted on a steering shaft, the steering sensor is disposed in a position close to the steering wheel and the rotary connector is disposed below the steering sensor. Elastic engagement bosses are formed at distal ends of the joint portions. The rotor and the steering wheel are coupled to each other by fitting the elastic engagement bosses into engagement holes bored in a central hub of the steering wheel.

Abstract: A rotational angle detecting device includes a rotation detecting section for outputting sinusoidal first and second detection signals as a result of the rotation of a rotor connected to a rotary member, a storage section for updating and storing the first and second detection signals, and a controlling section. The first and second detection signals have constant amplitudes, have the same periods, and have wavelengths which are output of phase. The controlling section compares the amplitude values of most recent first and second detection signals output from the rotation detecting section, and determines whether or not the amplitude values fall within proper ranges. When the controlling section determines that they fall within the proper ranges, a piece of detection information which is created based on the most recent first and second detection signals is supplied to a controller.

Abstract: An impeller for a water jet pump of a watercraft having a structure so as to enhance pump efficiency, and to reduce manufacturing cost having a tip portion configured to be fixed to a propeller shaft for being rotated integrally with the propeller shaft, and a rear end portion configured to be fixed to a pump shaft configured for being rotated in a pump casing. An upstream tip portion defines a spline hole which is formed directly in said tip portion of the impeller, the spline hole being configured for coupling to a spline shaft portion of the propeller shaft, the impeller further including a fitting hole which is formed on a rear end portion of the impeller configured for fitting a cylindrical member therein, and a cylindrical member is included having an outer periphery which can be fitted in the fitting hole and a female screw threads on an inner peripheral face configured for connection to the pump shaft are also provided.

Abstract: A mixed-flow type water jet pump having configured so that a tip clearance between an inner wall of a pump casing and an outer peripheral edge of an impeller can easily be adjusted, and which can easily be mounted on a watercraft. A pump casing is divided into two portions, a front casing and a rear casing, in a longitudinal direction, the front casing for housing an impeller provided with a longitudinal position defined simply with respect to the rear casing and being attached to the rear casing through a shim such that a predetermined clearance is formed between an inner wall of the front casing and an outer peripheral edge of the impeller.

Abstract: A mounting structure for a water jet pump of a personal watercraft which includes a vertical wall 5 formed at the rear end of a water intake duct to form a pump mounting space 6, a pump bracket 8 fitted with an inlet of the water jet pump 7 and having a connecting surface 15 to sealingly connect to the vertical wall 5. A sealant recess 15b for accommodating a non-solid sealant S such as a silicon gel, is formed in the connecting surface 15 of the pump bracket 8, to enhance the air and water sealing quality between the connecting surfaces of the pump bracket 8 and the vertical wall 5.

Abstract: A vehicle-mounted knob switch device having a smaller size and advanced functions is disclosed. The vehicle-mounted knob switch device comprises a stalk, a cover, a holder, a printed wiring board, first and second slider receivers, first and second sliders, a lamp, a screw, a first rotatable control knob, a first cam member, a pin and a spring cooperating to afford a first click feeling, a second rotatable control knob, a second cam member, a top cover, a ball and a spring cooperating to afford a second click feeling, and an indicator window. The first and second rotatable control knobs are directly coupled to each other without any other member interposed between them.

Abstract: To easily set a rotary connector to a steering system when providing various types of switches for the steering system. A fixed-side housing and a movable-side housing are rotatably connected each other to wind a flat cable in a storage space partitioned between the both housings. The fixed-side housing has an outer cylindrical portion for partitioning a part of the storage space and a support wall is integrally formed outside of the outer cylindrical portion through a gap. Moreover, a switch is set inside of the support wall, the switch is connected to a joint bar through a flexible substrate at the inside of the support wall and conductors of the flat cable extended from the outer cylindrical portion are also connected to the joint bar.

Abstract: An external connector mounted on a printed circuit board of a steering system is composed of a first movable carriage to which flexible terminals are secured, a second movable carriage for guiding the first movable carriage in the X direction, and a support carriage for guiding the second movable carriage in the Y direction so that the first and second movable carriages can move in the X and Y directions, respectively, with respect to the support carriage. When a fixed direct coupler of a rotary connector is connected to the thus constructed external connector, if the fixed direct coupler is displaced with respect to the external connector, the first and second movable carriages of the external connector move in the X and Y directions, respectively, with respect to the support carriage, whereby the relative displacement between the fixed direct coupler and the external connector can be absorbed.

Abstract: A rotary connector including a first housing rotatably connected to a second housing and forming an annular space therebetween, and a flexible cable wound within the annular spacing. According to a first aspect, the conductors of the flexible cable associated with an airbag circuit are spaced further apart than conductors for other circuits mounted on a steering wheel. A direct connector includes first terminals connected to the airbag conductors and second terminals connected to the other conductors. The first and second terminals are spaced apart and/or divided by a divider to prevent interference during assembly. In accordance with the second aspect, a locking member for preventing relative rotation of the first and second housings prior to assembly on a vehicle includes a cover portion for covering an open end of the direct connector.

Abstract: A rotary connector including a first housing rotatably connected to a second housing and forming an annular space therebetween, and a flexible cable wound within the annular spacing. According to a first aspect, the conductors of the flexible cable associated with an airbag circuit are spaced further apart than conductors for other circuits mounted on a steering wheel. A direct connector includes first terminals connected to the airbag conductors and second terminals connected to the other conductors. The first and second terminals are spaced apart and/or divided by a divider to prevent interference during assembly. In accordance with the second aspect, a locking member for preventing relative rotation of the first and second housings prior to assembly on a vehicle includes a cover portion for covering an open end of the direct connector.

Abstract: A rotary connector wherein a free rotation between both housings can be locked or unlocked in a simple manner. A holding member is formed integrally with a first housing through a thin-walled portion, while engaging projections are formed integrally with a second housing, and at the rotary connector manufacturing stage, by aligning both housings exactly with each other and thereafter inserting a tapping screw threadedly into a support portion of the holding member, the tapping screw can be brought into abutment with both engaging projections. Further, at the time of mounting the rotary connector into a steering system, a free rotation between both housings is ensured by cutting the holding member at the thin-walled portion.

Abstract: A clock spring connector having a high reliability of the connection and excellent workability of the assembly, said clock spring connector being capable of reducing noise. A flexible cable is wound on the outer cylindrical unit of a first housing and the inner cylindrical unit of a second housing so that the directions of the windings are opposite to each other, and a spacer disposed between the outer and inner cylindrical units rotates following the U-shaped turned-back portion of the flexible cable. An elastic tongue piece is disposed along the portion extending from the inner cylindrical unit, of the flexible cable and formed to be curved so that the tongue piece is located between the inner cylindrical unit and the spacer when no load is applied thereto.